Calculation of the Acoustic-Signal Transmission through a Tribounit of the Interior Ring of a Bearing and a Wheel Pair Axle

摘要

A model for propagation of acoustic waves through a tribounit of the interior ring of a bearing and a wheel pair axle is developed and calculated. The energy loss determined both by the limited transparency of a layer between the ring and the axle for different degrees of tightness and by reflection from the ring-axle boundary are considered in relation to the difference between the elastic-wave velocities in stressed ring metal and unstressed axle metal. Conclusions are made and recommendations are given for using the studied correlations in the developed acoustic tightness tests.